External 24 V Power Supply; Information On The Pulse Generator - DEMAG DIC 002 Series Operating Instructions Manual

For further information, see  "Control terminals", Page 48.
6.5.6

External 24 V power supply

Bi-directional control terminals X210A.1/X210A.2 can be used as a voltage output or a voltage input. Connecting
an external DC power supply of 24 V ±10% to terminals X210A.1/ X210A.2 makes it possible to program parame‐
ters, to maintain the input and output functions and to communicate with the unit, even if the line power supply is
switched off.
Input voltage range
Rated input current
Peak switch-on current
External fuse link
Safety
Tab. 31
CAUTION
Incorrect load for DC
The component may be damaged.
The digital inputs and the 24 V DC terminal of the control electronics are resistant to interference voltages up to
30 V DC.
Avoid higher voltage levels.
Higher voltage levels may destroy the equipment.
6.5.7

Information on the pulse generator

Only encoder cables which are fully screened enable fault-free signal transmission. This must be taken into con‐
sideration for project drafting and ordering. Different lengths of cable may be ordered.
Screened pulse encoder cables which are extended at a later date do not achieve the quality of a complete cable.
The open end of the screening is a weak point at the interface between sections of the cable and can allow inter‐
ference to be introduced and may result in distorted signals. An additional potential connection to the screen at
the interface to the earth will result in earth loops and must always be avoided.
The following points must be considered for correct electric cabling and wiring:
● Any interruption in the screen between the pulse generator and evaluation of the pulse generator should be
avoided.
● 360° screening clamps should be used for screening.
● Depending on the pulse encoders used, earth loops should be avoided by means of suitable measures (sin‐
gle-sided potential connection of the screen, potential connection on both sides of the screen for simultane‐
ous equipotential bonding). The screen on an intermediate terminal must not be earthed.
● The A+ and A- signals and the B+ and B- signals must each be led through pairs of twisted conductors.
External power supply requirements
DC 24 V ±10%
Max. 1,1 A
Typical: < 25 A
By means of conventional cable protection elements for rated current, delay type
Safety extra-low voltage (SELV) to EN 61800-5-1
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